package com.shopng.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.oauth2.config.annotation.configurers.ClientDetailsServiceConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerSecurityConfigurer;
import org.springframework.security.oauth2.provider.approval.UserApprovalHandler;
import org.springframework.security.oauth2.provider.token.TokenStore;

@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter
{
  private static String REALM="MY_OAUTH_REALM";
  
  @Autowired
  private TokenStore tokenStore;

  @Autowired
  private UserApprovalHandler userApprovalHandler;

  @Autowired
  @Qualifier("authenticationManagerBean")
  private AuthenticationManager authenticationManager;

  @Override
  public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception
  {
    endpoints.tokenStore(tokenStore).userApprovalHandler(userApprovalHandler)
    .authenticationManager(authenticationManager);
  }

  @Override
  public void configure(AuthorizationServerSecurityConfigurer oauthServer) throws Exception
  {
    oauthServer.realm(REALM+"/client");
  }

  @Override
  public void configure(ClientDetailsServiceConfigurer clients) throws Exception
  {
    clients.inMemory()
    .withClient("my-trusted-client")
    .authorizedGrantTypes("password", "authorization_code", "refresh_token", "implicit")
    .authorities("ROLE_CLIENT", "ROLE_TRUSTED_CLIENT")
    .scopes("read", "write", "trust")
    .secret("secret")
    .accessTokenValiditySeconds(120).//Access token is only valid for 2 minutes.
    refreshTokenValiditySeconds(600);//Refresh token is only valid for 10 minutes.
  }
}
